math.atanh()

In Python, the math.atanh() function returns the inverse hyperbolic tangent of a number.

Syntax

math.atanh(x)

Since it is used to reverse the effect of a hyperbolic tangent function, the parameter x must always a number between -0.99 and 0.99. A ValueError will occur if:

• x is greater than or equal to 1.
• x is less than or equal to -1.

Example

The following example shows the use of the math.atanh():

import math

x = 0.5
result = math.atanh(x)
print("Inverse hyperbolic tangent of 0.5 =",str(result))

The above code produces the following output:

Inverse hyperbolic tangent of 0.5 = 0.5493061443340549

Codebyte Example

Run the following code to understand how the math.atanh() function works:

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